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Free Ground Shipping on UPR Manufactured Products (orders over $99)
Free Ground Shipping on UPR Manufactured products within the 48 Contiguous United States. Order subtotal must meet or exceed $99 in order to qualify for this free shipping offer.
When lifting the front of the Super Duty 3 – 3.5″, the factory caster is reduced by approximately 1.5°. For the 2020-23 Super Duty, we provide a 2° caster shim which is enough to restore this caster and add a touch more – unfortunately, this “touch more” is rarely enough for proper tracking. This leaves us recommending our Adjustable Radius Arms proven to add an additional 2.5° of caster (when maxed). Combining the Carli Arms and 2° shims results in a Super Duty on 37″ tires that holds a lane, and returns to center after a turn, better than a stock truck.
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